Blending of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) with poly(ethyleneimine) as an active layer in depletion-mode organic thin film transistors

Yu Ju Lin, Yu Chang Li, Hong Jian Yeh, Yeong Her Wang, Ten Chin Wen, Li Ming Huang, Ying Kuo Chen

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The conjugated polymer poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT-PSS) is usually applied in fabricating electrodes of devices. In this work, the applications to organic a thin film transistor with the introduction of poly(ethyleneimine) (PEI) into the PEDOT-PSS are investigated. The conductivity of PEDOT-PSS can be reduced by incorporating PEI into PEDOT-PSS, which can be applied as an active layer instead of electrodes for devices application. Based on the PEDOT-PSS blended with PEI, the fabricated devices posses a depletion-mode transistor behavior with the on/off ratio of about 103 is used. Meanwhile, the role of PEI in PEDOT-PSS to modulate the channel conductivity is discussed.

Original languageEnglish
Article number253501
JournalApplied Physics Letters
Volume91
Issue number25
DOIs
Publication statusPublished - 2007 Dec 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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